Stitching machine



- 1,462,898 G. P. BAUMANN STITCHING MACHINE Filed June 2'7, 1921 2 Shams-Sheet 1 MT w v. a m y July 24, 1923.

July 24, 1923.

G. P. BAUMANN STITCHING MACHINE I 2 Shams-Sheet 2 Filed June 27, 1921 llll Patented July 24, 1923.

cozrrrnrnn r. BAUMANN, or CHICAGO, rumors, AssIeNoR r0 rpuans'rrronnn e manurac'runrue COMPANY, or orrrcaeo, rnnrnors.

STITCI-IING- MACHINE.

Application filed June 27, 1921. Serial No. 480,742.

T 0 all whom it may concern:

Be it known that I, Gorrrnino P. BAU- MANN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Stitching Machines, of which the following is afull, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to stitching machines I and has to do more particularly with the construction of an improved clincher block and supporting post arrangement of the type used for stitching the ordinary cardboard or other paper boxes.

In connection with stitchers of this type long clincher-block supporting posts have been provided held in a normal upright position and adapted to be unlocked and tilted forwardly by a foot treadle. Heretofore, however, great difficulty has been met with in the use of such posts in that they were very easily thrown out of alignment so that the clincher block would not be maintained properly beneath the former and driver and the head of the stitching machine.

One of the features of my invention obviates this latter objection by theprovision of a three-way adjustment for the clincher block whereby it may be adjusted vertically to the proper height, and in two crossing horizontal directions, such as trans- I qng spring 24 which 1s attached to,the post versely and from the back toward the front, to definite vertical alignment with the former and driver.

Another feature-of my invention is the provision of an improved and simplified vertical adjusting means. A further feature is the provision of an improved and simplified post locking and actuating means.

Other features of my invention will be more particularly pointed out in the ensuing part of the specification and appended claims.

Referring now to the accompanying drawings for a better understanding of my invention Fig. 1 is a side elevation showing. an ordinary wire stitcher with my improved clincher block and post construction applied thereto;

Fig. 2 is a face view of the post arrangementshown partly in section along the line 2 2 of Fig. 5;

Fig. 3 is a transverse sectional viewalong the line 3-3 of Fig. 2 showing the yielding .the usual head 10 andbase ill, the head;

containing the usual wire feeding forming and driving mechanism. A tiltable post arrangement is supported upon the base .11 of the stitcher and comprises an anvil post base bracket consisting of a base portion 12 and uprights 1314: which pivotallysupport thepost base 15. To. this end a shaft 16 passes through the sides l3\1 4 and the hub 17 of the post base.

The base plate l2 has a number ofsilit v able holes l8 through which bolts are passed for securing it to the base of the machine. An upright extension 19 is. provided atlthe rear of the base bracket and-carries anlads justable stopscrew ZO adapted to engage,

a. stop surface 21 on the post'base 1 5. flhis screw 20 is held by a lock nut 22. wh-ic h als clamps a plate 23 for holding a retrievas shown in Fig. 1. By means ,ofthe stop screw 20 the post may be adjusted so as to assume the proper vertical position; in alignment with the former and driver carriedfby' the stitcher head.

. A treadle actuated operating and locking;

An angle iron 29 is suitablysecured to; the .1

treadle support 25 and carries a treadle step 30 at the forward end. thereof.

The treadle post actuating and locking means is preferably, controlled by, thesiingle treadle member, which is arranged; to, un.-.,.:

lock. the post by its initial or preliminary movement after which the succeeding movement thereof will move the postforwardly clear of the stitcher head so thatthe'box may be placed thereoven as indicatedbythe:

ing through a slot 38 in the link.

which is determined by the length of the slot 38, before the movement ofthe post commences. The post, of course, is normally held in an upright position by the spring 24 but in order to hold the treadle in its upper normal position I provide a treadle 5 spring 40 connected at its lower end to the pin 34' and its upper end to a lug 41 by means of a cap screw 42.

In'order to prevent a too far forward movement of the post I secure a stop plate '43 across" the front of the post supporting uprights 1314.

Now as to the post locking means I pref- I erably provide cooperating locking plates on the post support hub and the treadle consisting of a hardened steel plate 45 secured in a recess 46 of the hub. The cooperating treadle plate is also preferably a hardened steel member 47 suitably fastened to the treadle and sized to lock against the post plate 45' and hold the post in an upright position to prevent a forward movement thereof unless the treadle is stepped on.

Supported in the post bracket 15 is a clincher block 'post48 suitably and rigidly held in place preferably by threading into the bracket at 49. This post 48 is preferably a steel tube into the upper end of which is driven a-fianged sleeve 50 rotatably support ing an adjusting nut 51 knurled at its periph- "ery52 so that it may be grasped by the hand of 'the operator forrotatable adjustment. This adjusting nut 51 carries a clincher block support 53 having a depending shaft threaded at 54 into the adjusting nut 51 and the lower end 55 extending downwardly into the collar 50/ The end 55 is slotted at 56 through which a pin'57 extends so as to prevent relative rotation .of the clincher block supporting member 53 and the post 48 to thereby maintain the clincher block support always at a definite relation to the stitcher head, althoughadjusted verticallyby means of theadjusting nut 51.

At the upper end of the clincher block support 53 is 'a'clincher block 58 comprising a block set in a transverse slot 59 in the upper end of the support 53. Thus the clincher block may be shifted transversely into proper alignment with the former and driver. A set screw 60- isthreaded through the wall masses of the support 53 so as to hold the clincher block in its adjusted position. This transverse adjustment provided in connection with the vertical adjustment of the clincher block overcomes the great difficulty heretofore experienced. in maintaining the clincher block and former in proper alignment. The clincher block post being extremely long ordinarily three to four feet long, the slightest displacement of the base, due to the hard wear to which such a machine is subjected, climatic changes and Warping, will throw the clincher block off enough to prevent a most effective stapling operation. All this, however, is obviated by the construction which I have provided.

In connection with the vertical adjustment referred to I provide a yielding lock in the nature of a spring pressed stud 61 adapted to engage the adj acently positioned recesses 62 in the adjusting nut 51 so that it will be suitably retained in its adjusted position although yieldingly held so that it may be manually rotated to vertically adjust the clincher block when necessary. In the operation of the device, the operator places his foot upon the step 30 of the treadle, pressing it downwardly so that its preliminary movement unlocks the locking plates 45-47. This preliminary or unlocking movement of the lever is permitted due to the lost motion at the slot 38 of link 31 after which the continued downward move ment of the treadle causes the link 31 to; operatively engage pin 37 and tilt the post forwardly so that the clincher block will clear the stitcher head as indicated by the dotted lines in Fig. 1. The box is then placed over the post as indicated'by the dotted lines 65. The foot is now removed from the treadle and spring 24 thereupon returns the post to its normal upright position and treadlespring 40' returns the'treadle to its normal and looking position. The oper ator now steps upon the usual stitcher actu-v ating treadle and the box maybe moved along on the clincher block and stitched as desired. To remove the box, the treadle is again stepped upon thereby unlocking the post and tilting? it forwardly to a position clear of the stitcherhead; i

What I claim as new and desire to by U. S. Letters Patent is: I

1. In a stitching machine, atubular clincher-block post, a rotatable sleeve extending upwardly out of the post, a clincher-block secure support having a depending stud threaded down into the sleeve whereby rotation ofthe sleeve will adjust the clincher-block support, and a stationary sleeve positioned between the post and rotatable sleeve carrying means upwardly out of the post, a clincher-block support having a depending stud threaded down into the sleeve whereby rotation of the sleeve will adjust the clincher-block support, means to prevent relative rotation of the support and post, and a stationary'sleeve positioned between the post and rotatable sleeve carrying means for yieldingly holding the rotatable sleeve in adjusted position.

3. In a stitching machine, a tubular clincher-block post, a rotatable, sleeve extending upwardly out of the post, a clincher block support having a depending stud threaded down into the sleeve whereby rotation of the sleeve will adjust the clincherblock support, and a clincher-block transversely adjustably carried at the upper end of said support substantially within the outer confines thereof.

4:. In a stitching machine, a tubular clincher-block post, a rotatable sleeve extending upwardly out of the post, a clincherblock support having a depending stud threaded down into the sleeve whereby rotation of the sleeve will adjust the clincherblock support, means to prevent relative rotation of the support and post, and a clincher-block transversely adjustably carried at the upper end of said support substantially within the outer confinesthereo'f.

5. In combination with a stitching machine head and base, a clincher-block. post base bracket, a clincher-block post pivotally mounted on said bracket and having a normal upright position, a clincher-block, and adjusting means whereby said clincher-block may be adjusted in two horizontal directions to a normal definite vertical alignment with the head.

6. In combination with a stitching machine head and base, a clincher-block post base bracket, a clincher-block post pivotally mounted on said bracket and having a normal upright position, a clincher-block, and means for adjusting said clincher-block in three directions relative to the head.

7 In combination with a stitching mamal upright position, a clincher-block, and means for adjusting said clincher-block in two horizontal directions and'vertically to a definite relation wit-h the head.

8. In a stitching machine, a clincher-block post base bracket for mounting on the base of the stitcher, a clincher-block post pivotally mounted on said bracket so as to tilt for ward from a normal upright position, a treadle pivotally secured to said bracket, interengaging Locking plates on said treadle and postto normally lock thepost in its upright position, and a link connecting said treadle and post but having lost motion so as to permit a preliminary movement of the treadle to unlock said plates and a further movement to tilt the post.

9. In a stitching machine, a clincher-block post base bracket for mounting on the base of the stitcher, a clincher-block post having a hub pivotally secured to said bracket so as to permit tilting the post forward from a normal upright position, a treadle'pivotally secured to the bracket beneath the hub, a locking plate set in a recess in the hub periphery, a cooperating locking plate carried by the treadle to normally look the post in its upright position, and a lost motion connection between the treadle and post so as to I permit a preliminary movement of the treadle to unlock the plates and a further movement to tilt the post.

10. In a stitching machine, a tubular clincher-block post, a clincher-block supporting post adjustably extending up out of the tubular post and of substantially the same cross-sectional area, a transverse slot across the top of the supporting post, and a clincher block adjustably held for movement along in said slot.

In witness whereof, I hereunto subscribe my name this 16th day of June, A. D., 1921.

eo'rrrmisn P. BAUMANN. 

